14. [-/1 Points] DETAILS LARCALCET7 13.6.039. Find the normal vector to the level curve f(x, y) = c at P. f(x, y) = 12 - 9x - 5y C = 12, P(0, 0) Vf(0, 0) = Need Help? Read It Submit Answer 15. [-/1 Points] DETAILS LARCALCET7 13.6.042.MI. Find a normal vector to the level curve f(x, y) = c at P. X f ( x, y ) = x2 + 12 C = 1 10 P(5, 5) Need Help? Read It Watch It Master It